ABB A155-M57 Operation Manual page 54

Operation Manual / 4 Product description / A150-M.. - A155-M..
3 Commissioning
3.1.5 Oil orifice in the bearing casing
Figure 16: Oil orifice
01 Bearing casing
02 Oil orifice
03 Circlip
With an oil inlet pressure of more than 3 bar (with engine under load) before the turbocharger,
the bearing casings are equipped as standard with an orifice at the oil inlet.
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Revision F January 2017